Bending Shoe Product Type Bending Shoe Minimum Compatible Pipe Size 1 in Maximum Compatible Pipe Size 1 in Compatible Tool Series STB221 Pipe Bend Radius 5 1/8 in Compatible Manufacturer Model Number STB101A STB101B STB101E STB101H STB101N STB101X Compatible Grainger Part Number 25TU84 25TU85 25TU86 25TU87 25TU88 25TU93 25TU94 25TU95 2RV32 Compatible Pipe Schedule 160 40 80 Compatible Wall Thickness 0.133 in 0.179 in 0.25 in 0.358 in Tool Series BZ