Model SPD-SL ROAD Bike Fit Cleat Wedges for Look/Shimano 3-Hole Road Pedals work with Shimano SPD-SL (Shimano Road), Campagnolo, Time Road, and similar 3-hole cleat systems.Features: Solves problems with alignment and common cycling pain (foot, knee, and back). Relieves pressure or hot spots on the outside of the feet. Allows foot to function naturally without being forced flat by the pedal. Durable plastic construction to withstand harsh road conditions, debris, and dirt. Increases foot stability leading to improved power transfer. Flexible enough to conform to the stiff sole of a rounded cycling shoe. Specially designed formula increases the strength of the plastic. Compatibility: Shimano SPD-SL Campagnolo Time Road Other 3-hole cleat systems Includes: (8 pcs) 3-hole Cleat Wedges (2 pcs) 12 mm Hex Screws (4 pcs) 14 mm Hex Screws Installation instructions Why Wedge? The 3-hole system is also known as the Shimano system, named after the pioneering manufacturer. This system is most commonly used for road cycling due to its stable platform for efficient energy transfer. The soles of performance-oriented cycling shoes are typically stiff with minimal tread, designed more for riding than walking. The larger cleat design uses a three-fastener connection, providing a more secure attachment compared to 2-hole systems. Popular 3-hole cleat brands include Shimano SPD-SL, Campagnolo, Time Road, and others.Model SPD MTB Features: Solves problems with alignment and common cycling pain (foot, knee, and back). Relieves pressure or hot spots on the outside of the feet. Allows foot to function naturally without being forced flat by the pedal. Durable plastic construction to withstand harsh conditions, debris, and dirt. Increases foot stability leading to improved power transfer. Flexible enough to conform to the stiff sole of a cycling shoe. Specially designed formula increases the strength of the plastic. Tech Specs: Weight: Less than 1 gram Dimensions: 34mm x 33mm Compatibility: Shimano SPD Time ATAC Speedplay Frog Crank Brothers Other popular 2-hole MTB pedals NOT COMPATIBLE WITH SPEEDPLAY SYZR What's in the Box: (8 pcs) 2-hole SPD / MTB compatible Cleat Wedges (2 pcs) 12 mm hex screws (2 pcs) 14 mm hex screws