Shimano FD-M310 Aultus Front Derailleur - 28.6-34.9-mm 3x7/8 Speed Low-Clamp Size:One Size The center tread features ramped

The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike

Ribbed neck and cuffs

Although this product is made of waterproof rubber

open stretch mesh for breathability

synthetic leather

Shimano FD-M310 Aultus Front Derailleur - 28.6-34.9-mm 3x7/8 Speed Low-Clamp Size:One Size The center tread features rampedShimano FD M310 Aultus Front Derailleur 28. 6 34. 9 mm 3x7 8 Speed Low Clamp F Low clamp design and dual pull cable routing Low clamp Top Swing band Mount Dual pull Cable Routing Designed for large chainrings up to 42T 48T S 37 or 38 speed Fits 34. 9mm, 31. 8mm, and 28. 6mm 20T Capacity 47. 5mm 50mm Chainline