1. Compact design and comfortable grip.
2. Heavy-duty construction for durable operation.
3. Pad size: 75mm x 100mm for obs-813,100mm x 110mm for obs-814.
1. Net weight: 1.91 lbs (0.87kgs). 
2. Length: 3-7/8" (99mm). 
3. Avg. air cons.: 3.4 cfm (97 l/min). 
4. Air inlet: 1/4". 
5. Hose size: 3/8" (9.5mm). 
6. Air pressure: 90 psi (6.3 kg/cm2). 
7. Free speed: 17,000 r.p.m. 
8. Spindle thread: 5/16"-24 UNF. 
9. Noise level: lower than 82 dBA.