| B1 Shaft Penetration | 9.5 mm | 
| Bore Dia. | 9 mm | 
| Bore Tolerance | +0.05 mm / +0.01 mm | 
| Country of Origin (subject to change) | Germany | 
| Fastening Dimensions | Metric | 
| Finish | Clear Anodized | 
| Hub Width | 9.5 mm | 
| Material | Aluminum | 
| Max. RPM | 22000 RPM | 
| Max. Temp. Range (F) | -22?F to 175?F (-30?C to 79?C) | 
| Measurement Type | Metric | 
| Number of Screws | 1 ea | 
| Outside Dia. | 0.984 in (25.0 mm) | 
| Overall Length | 1.004 in (25.5 mm) | 
| Recommended Shaft Tolerance | +0.0000 in / -0.0005 in | 
| Screw Finish | Black Oxide | 
| Screw Material | Alloy Steel | 
| Screw Seating Torque | 1.3 Nm | 
| Screw Type | Clamp | 
| Set Screw Size | M3 | 
| Style | Clamp | 
| Weight | 0.022 lbs |