Chicago Pneumatic pneumatic power tools are designed specifically with the professionals in mind. High quality, reliable, industry-leading pneumatic power tools in Middle East. Best Quality. Best Performance. Range of Products. Brands: Impact Wrench, Torque Wrench, Grinders. The collet of these pencil grinders accepts burs and mounted points with a 1/8" shank diameter. A 1/8" collet is the standard size for pencil grinders. Attachments with a 1/8" shank are typically used for lighter-duty work than those with a thicker shank, and for heavier-duty work than those with a thinner shank. Easy to Handle General Maintenance Application Ideal for Limited Space Applications Quiet and Lightweight Duty / General Free Speed / 60,000 RPM Average CFM @ 15 Second Run Time / 1.8 CFM @ Full Load / 7.0 HP / 0.05 hp Exhaust Type / Rear Throttle / Twist Variable Speed / Yes Min. Hose Size / 3/8 in Whip Hose I.D. / 1/4 in Hose Length / 60 in Air Inlet / 1/4 in NPT Overall Length / 5 1/5 in Collet Capacity / 1/8 in Required Pressure / 90 psi Bearings / Ball Housing Material / Composite Tool Weight / 0.5 lb