Features Two-bolt housing with ball bearing insert for ready-to-mount installation. Sturdy structure provide reliable support, forged by zinc alloy for better durability. Setscrew locking collar for secure attachment to guided shaft. Between the inner bearing and outer fixing ring angle can fine tune. Good workmanship and strict standard, precise and easy to install. Features: Two-bolt housing with ball bearing insert for ready-to-mount installation. Sturdy structure provide reliable support, forged by zinc alloy for better durability. Setscrew locking collar for secure attachment to guided shaft. Between the inner bearing and outer fixing ring angle can fine tune. Good workmanship and strict standard, precise and 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