Proto J1118SPL Box End Wrench: Chrome, 1 4 in_5 16 in Head Size, 7 1 4 in Overall Lg, Offset Color:Silver Square Measurement Type SAE Finish Square Measurement Type SAE Finish Chrome Number of Pieces 11 Handle Material Multi Component Includes Loop Maker Handle Type Molded Driver Type 11 in 1 Single End Double End Double End Ratcheting No Tether Capable Tether Ready Features Tri lobe Handle Packaging Type Bucket Requires Dispenser No Hygiene Series None Hygiene Properties None Wipes per Container 72 Color White Blue Hygiene Form Towels Refill Type No Refill Fragrance Citrus Green Environmental Attribute Total VOC Emissions Less Than or Equal To 0 it features a head size of 1 4 inch and 5 16 inch for tight spaces Spline Helps Reduce Foreign Object Debris (FOD) by Having a Precise Fit Between the Fastening Tool and Its Fastener Head Type Offset Standards ASME B107