Click to expand Tap to zoom Arm Rest Knob by Showerbuddy Sale $12.60 SKU 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart For Use With: SB1, SB2, SB2T, and SB3T. Details Weight 1.00 LBS Height 3.50 Width 5.25 Depth 1.65