The O-Ring Pick set from Birzman is designed to make the removal and placement of these often fiddly components a whole lot easier.This dual-tool set features two implements with different shaped ends, capable of placing and lifting the most awkward of O-rings when you are repairing your bike chain. Each tool has one hooked end, with an L-shaped opposite end on one and an N-shaped end on the other.Precise tools for a tricky job, the O-Ring Pick set makes this part of chain maintenance as quick and hassle-free as can be.Specification:Material: Hardened Steel / High polymer.