• Size: 4 MM

• Long Arm Length Range: 66mm - 70mm

• Short Arm Length Range: 23mm - 25mm

• Material: Hardened Alloy Steel

• A Hex Key Is A Six-Sided Shaped Bar Bent At A 90 Degree Angle At One End

• Designed To Be Inserted Into A Like-Sized, Hollow Recess Of A Socket Screw To Manually Tighten Or Loosen The Fastener

• Either Side On The Key Can Be Used For Convenience

Warning this product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.