ITEM NAME:1/2" Collet Nut Plunge Router Parts 22.5x27mm High Hardness For 3612 M&E Specification: Brand new Material: Metal Main Color: Black Female Thread Diameter: approx. 19.5mm Center Hole Diameter: approx. 12.7mm Total Size: approx. 22.5 * 27mm High strength and hardness. Durable in use. Good replacement for broken one. Fit for Makita 3612 plunge router. Package included: 1 x Collet Nut Note: Please allow 1-3mm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same..1 x Collet Nut. High strength and hardness. Durable in use. Main Color: Black.