The CRL BM Series of Pull Handle/Towel Bar Combinations With Metal Washers are provided with all the hardware required for installation. They are constructed of 1.5 mil thick heavy brass tubing. Each set consists of a pull handle/towel bar set, along with decorative metal back-up washers and plastic washers to protect against glass-to-metal contact. SPECIFICATIONS:Material: 3/4" (19 mm) Diameter Brass Tubing (1.5 mil thick), 1-1/4" (32 mm) Diameter Metal WashersGlass Thickness Range: 1/4" to 1/2" (6 to 12 mm)Hole Diameter Required: 1/2" (12 mm)Center-to-Center Hole Spacing: 6" Pull = 6" (152 mm) 8" Pull = 8" (203 mm) 12" Pull = 12" (305 mm) 12" Towel Bar = 12" (305 mm) 18" Towel Bar = 18" (457 mm) 20" Towel Bar = 20" (508 mm) 22" Towel Bar = 22" (559 mm) 24" Towel Bar = 24" (610 mm)AVAILABLE SIZES: Cat. No. BM6X12 6" Pull/12" Towel Bar Cat. No. BM6X18 6" Pull/18" Towel Bar Cat. No. BM6X22 6" Pull/22" Towel Bar Cat. No. BM6X24 6" Pull/24" Towel Bar Cat. No. BM8X18 8" Pull/18" Towel Bar Cat. No. BM8X20 8" Pull/20" Towel Bar Cat. No. BM8X22 8" Pull/22" Towel Bar Cat. No. BM8X24 8" Pull/24" Towel Bar Cat. No. BM12X24 12" Pull/24" Towel Bar