Park Tool Nipple Driver ND-1Built to save precious time and effort during your wheel build, the Nipple Driver ND-1 is specially designed to efficiently thread and unthread your rims' spoke nipples.Neat, Self-Centring Driver ToolUniquely shaped for optimum leverage, this Park Tool wheel-building companion is equipped with a self-centring tip for perfect nipple engagement as you loosen and fasten your spokes in place. Bronze bearings ensure smooth and durable rotation of the tool's arm, while the dual-density handle gives great comfort and grip. Compatible with rims up to 50mm in depth, the Nipple Driver ND-1 is brilliantly economic tool for essential wheel work. Features: Material: Handle: Dual-Density construction; Bearings: Bronze Compatibility: Rims up to 50mm deepBuy Park Tool Workshop from Chain Reaction Cycles, the World's Largest Online Bike Store.