Proto J1246B Combination Wrench, Alloy Steel, Black Oxide, 1 7 16 in Head Size, 19 1 4 in Overall Lg G109691441 Rust Resistant Grommet Spacing 12 Rust Resistant Grommet Spacing 12 in Screen Material Thickness 0 These clamps have grooved clamping surfaces that are good for holding round material Material Alloy Steel Finish Black Oxide Head Size 1 7 16 in Overall Length 19 1 4 in Head Offset Angle 15 ° Opening Angle (Deg ) 15 ° Head Type Offset Head Thickness 13 16 in Measurement Type SAE Opening Type Rounded Box End Type 12 Point Box End Number of Points 12 Tether Style Tether Capable Nonsparking No Non Magnetic No Insulated No Reversing No Ratcheting No Handle Color Silver Anti Slip Design No Corrosion Resistant Yes Wrench Length Style Standard Standards ASME B107