Stainless Steel Roller RockersChevy LSRatio: 1.7Set of 16 Procomp Electronics Stainless steel rollers are manufactured from heat-treated stainless steel and alloy steel tip rollers. Procomp Electronics roller rockers are available in various ratios, so you are good to go. They feature greater strength and durability, capable of withstanding valve spring load up to 600lbs.