The outside hex head will fit your glo-plug/prop nut wrench, inside socket is made to fit standard allen wrenches. Both methods insure a safe, non-slip way to secure or loosen wing bolts.
Note: This is not a comprehensive list of all compatible products and even though we try our best to keep this list accurate, compatibility is not guaranteed. Please consult the manual for your vehicle, the manufacturer of the product, or contact us here at Hobby Wholesale to confirm compatibility if you are unsure.