Standard Triangular Inner Profile Tube. O.D.: 36.0 mm, Wall Thickness: 4.5 mm. Length: 1500 mm. Replaces: Bondioli & Pavesi No. BP125071500. Fits Bondioli & Pavesi 100 Series: Size 4; Bondioli & Pavesi SFT EL Free Rotate Series: Size S4.