Could be for an Apollo Chopper ? Not sure how the numbers relate to the size but they are not 14 millimeters ,they measure about 13/16" and I expect the S/P stands for spark Plug . Motorcycle Repair tools , Apollo SP22M 14MM about 3 1/4" long ,SP22/L 820 A/F about 10 7/8" long , Tube socket .Steve 250-479-8348 (landline) Check your junk mail if no reply or phone and leave your number . Cheers.