About JB Tools. M7 Pneumatic Die Grinder with 0.9 hp Motor Lever Throttle and 1/4" 1/8" Collet. M7 Micro Pneumatic Die Grinder with 1/8" Collet and 1500mm Air Hose (QA-421B). M7 Pneumatic Die Grinder Kit with 1/4" Collet and 10 Grinding Stones (QA-651N).
