Stone Mountain Heavy Duty Offset Router Collet Wrench for most Bosch, Makita & Triton 2-1/4 HP Routers (15/16" Bosch, Makita & Triton 2-1/4 HP Routers) - - Amazon.com
Plunge Router Collet Engraving Machine Nut For Makita 3612 Metal 22.5*27mm - Walmart.com