Nupla 6894103 Dead Blow Hammer Fiberglass Handle, 3 lb Head Wt, 2 1 2 in Hammer Face Dia, 14 in Overall Lg 10N32 63A 500V IR50kA Φ6 63A 500V IR50kA Φ6 01 Function Measures the Freezing Point of Automotive Coolants (Propylene Glycol and Ethylene Glycol) and Indicates the Specific Gravity of Battery Acid and Provides A Quick Reference of Battery Charge Condition Freezing Point Ethylene Glycol Freeze Point: 60 Degrees F (59%) to 25 Degrees F (16%) Head Weight 3 lb Head Material Polymer over Composite Handle Material Fiberglass Handle Color Yellow Tether Capable Tether Capable Head Color Black Replaceable Tip No Nonsparking No Features Free Flowing Inner Shot Concentrates Striking Power and Increases Driving Force Tether Style Standard Tool (Accessory Needed for Tethering) Dead Blow Construction Shot Loaded Composite Interior Cavities Non Marring Yes Face Shape Round Hammer Type Dead Blow Hammer Series Standard Power Drive Dead Blow Hammer Yes Face Material Polymer over Composite Non Sparking No Face Hardness Soft Tether Ready No The Nupla 6894103 Dead Blow Hammer is designed for maximum impact and control with its 3 lb head weight and 2 1 2 inch hammer face diameter