Features: - Two-bolt housing with ball bearing insert for ready-to-mount installation. - Setscrew locking collar for secure attachment to guided shaft. - Between the inner bearing and outer fixing ring angle can fine tune. - Easy to install. Specifications: 8mm type: - Inside diameter: 8mm - The 2 fixing hole spacing:42mm - Fixed hole diameter:6.6mm 10mm type: - Inside diameter: 10mm - The 2 fixing hole spacing: 45mm - Fixed hole diameter: 7mm 12mm type: - Inside diameter:12mm - The 2 fixing hole spacing:55mm - Fixed hole diameter:6.6mm 20mm type: - Inside diameter: 20mm - The 2 fixing hole spacing: 70mm - Fixed hole diameter: 10mm Material: zinc alloy Package Included: 1pcs Bore Diameter Ball Bearing Pillow Block (Size is based on what you select) Package List 1Two-bolt housing with ball bearing insert for ready-to-mount installation 2Setscrew locking collar for secure attachment to guided shaft. Our high-quality bearing is made to reduce your replacement frequency and maintenance cost 3Between the inner bearing and outer fixing ring angle can fine tune 4Easy to install. Made of high quality zinc alloy, more durable, more stable, with good antioxidant capacity 5Our zinc alloy vertical bearing can be used in mining, petroleum, electric power, metallurgy, textile, agriculture and other industries