The PD-R550 offers full feature functions for all levels of riders. Get some Shimano magic under your dogs and feel the difference. A super light and strong resin body with a chromoly spindle, adjustable release, and wide platform gives you the perfect balance of performance and ease of use. Wide lightweight resin body provides large shoe contact area to maximize power transfer and support. The low profile platform is low maintenance and allows for easy adjustments.
great bang for your buck, I bought these for my everyday bike and perform just as good as the ultegras I have on my race bike (except just a tad bit heavier) 10/10
Compare the price, weight, etc with Shimano's more expensive SPD-SL pedals and you will find minimal differences. Excellent compromise of quality and price.