Brand: CSR Performance Manufacturer's Part Number: CSR 310 Part Type: Feeler Gauges Product Line: CSR Valve Adjustment Tool Sets Summit Racing Part Number: CSI-310 UPC: 816905000904 Feeler Gauge Range: 0.0015-0.035 in. Feeler Gauge Handle Included: Yes Quantity: Sold as a kit. CSR Valve Adjustment Tool Sets CSR valve adjustment tool sets make valve adjustment easier. They include two 5 in. long billet aluminum handles; one is anodized blue for the intake， and one is anodized red for the exhaust. These sets also include 32 feeler gauges ranging from 0.0015 in. to 0.035 in. that fit into the handles.