Brand: TOGU Handle Material: 1.2mm Wall Thickness Commercial Grade-304 Stainless Steel Mounting Standoffs and Threaded Fastener Bolts Material: 100% Solid German Standard Commercial Grade-304 which will result in a very long durability and usage. Total length: 450mm / 17.717 inches Center-to-Center Mounting Distance: 300mm/11.811 inches Mounting Standoffs Height: 52.4mm/2.06 inches Cross-Section Diameter: 32mm/1.26 inches Finish: Matte Black Door Type: Mountable on all types of doors including but not limited to glass and wooden doors, works up to 70mm/2.756 inches door thickness. Note: Each purchase comes as a PAIR of door pulls for inside and outside of a single door. For double doors, 2 pairs are required. Steps for Installation: Drill and create two end to end holes between 0.315 - 0.600 inches (0.375 is recommended) on the door with a Center-to-Center Mounting Distance. Use the Hexagonal Allen wrench to lose the hex socket set screws in the top and bottom pull connection base, remove apart the inner side and outer side of the door pulls. Put the inner side pull handle and outer side pull handle aligning at each other and tighten the 4 pieces of the hex socket set screws in the top and bottom pull connection base. This completes the installation process. Warranty Description : Limited Lifetime Replacement Warranty