Dumbbells
Buy and sell dumbbells in Costa Rica.
Two dumbbells with the same number moulded into the end can be very different weights in Costa Rica, because pairs brought from the United States are marked in pounds, European brands mark kilos, and both end up in the same home gyms. They come new and pre-owned: rubber hex pairs, light vinyl hand weights, spin-lock handles with loose plates and selector sets that change weight with a dial. Iron barely wears out, so a pair that has spent a few years under a bed is usually as good as the day it was bought, give or take a scuffed corner.
Hex, vinyl and spin-lock dumbbells:
cover most of what a home gym needs, and they differ in how they take being put down. Rubber hex dumbbells are fixed pairs with six flat sides, so they sit still on the floor instead of rolling under the sofa, and the coating spares both the floor and the neighbours. Vinyl and neoprene hand weights are the light, coloured ones used in toning classes, close cousins of the mats in yoga and pilates. Spin-lock dumbbells are a short threaded handle with plates held on by screw collars: the cheapest way to cover a wide spread of weights, and the slowest to change between sets. Most handles take narrow-hole standard plates, not the wide-hole Olympic plates that fit a gym barbell, so check before buying plates for them. Selector dumbbells such as the Bowflex SelectTech, and their many lookalikes, rest in a cradle and lift out only the plates you dial in.
Selector dumbbells against a rack of fixed pairs:
is a question of space, speed and how hard you train. A selector pair replaces a whole row of fixed dumbbells in the corner of a bedroom, and changing weight takes seconds. The catch is the mechanism: the plastic parts do not forgive a drop, the handle is longer than a fixed dumbbell’s, and the top setting runs out sooner than a serious lifter would like. Fixed hex pairs need a rack, but nothing on them can break, and they can be set down hard at the end of a heavy set. Benches and racks to keep them on are under exercise equipment.
Dumbbells sold by the pound:
get cheaper per pound the heavier they are. New rubber hex pairs run from around ₡1,200 a pound for plain unbranded ones to roughly twice that for a known brand. A selector pair is about ₡200,000 to ₡370,000 new, depending on how high it goes. Couriers charge by weight, so a heavy pair ordered from abroad carries a hefty freight bill, which is why a used pair already in the country holds most of its value. A fixed pair loses value mainly to looks and smell, or to a missing partner. A used selector set loses more, because the dial and the plastic cradle are the parts that wear, and they cannot be welded back together.
A used pair on the bathroom scale:
tells you more than the number on the end. Cheap hex dumbbells can come out noticeably light, so weigh both. Twist each head against the handle: on cheaper pairs the heads are glued or pressed on and work loose, and a head that turns or clicks is past saving. Look for cracks in the rubber next to the handle, where it splits first, and smell it, since cheap rubber can hold a smell that never fades. Vinyl weights with a split shell are usually filled with cement or sand rather than iron. On a selector set, run the dial through every setting, lift the dumbbell out of the cradle each time and give it a shake: a plate left behind, or one that rattles loose, is the fault that finishes these. Surface rust on bare iron cleans off; pitting in the knurled grip does not.
A dumbbell listing that states pounds or kilos:
saves a round of messages. Say which unit is moulded on the end, give the weight of each dumbbell rather than the pair’s total. Photograph the heads end-on, the handle, and any crack or chip in the coating. For a selector set, show the cradle, name the brand or say it is a copy, and confirm that every setting locks. A heavy pair does not travel on a moto, so a buyer coming over from Heredia will want to know they can bring a car to your door and load up without carrying the weights down a flight of stairs.