Pitch: 12.7mm (40P), 15.875mm (50P), 19.05mm (60P)
Pin abu: bakin karfe
Tsawon tsayi: 40P 3.048m = 10 ƙafa (hanyoyi 240)
50P 3.048m = ƙafa 10 (hanyoyi 192)
60P 3.048m = ƙafa 10 (hanyoyi 160)
Mayar da hankali kan samar da mafita na mongpu na shekaru 5.