Kateetarka buufinta OTW waxa ku jira saddex badeeco: 0.014-OTW buufin, 0.018-OTW buufin, iyo 0.035-OTW buufin oo loogu talagalay siday u kala horreeyaan 0.014inch, 0.018inch, iyo 0.035inch silig guide.Alaab kastaa waxay ka kooban tahay buufin, caarad, tuubo gudaha ah, giraanta horumarinta, tuubada dibadda, tuubada walbahaarka ee fidsan, isku xidhaha Y-qaabeeya, iyo qaybo kale.