Redg Crockwe bụ Reber nke na-emekọ ihe ọnụ dị ka waya, ọ bụkwa ụdị ụlọ a na-ewu ụlọ.
Mpempe akwụkwọ mkpuchi bụ ụdị nke Mburan, mana enwere ọdịiche dị n'etiti ha abụọ. Iji maa atụ, enwere ọdịiche n'ụdị abụọ ahụ, Reprar ahụ bụ Linear, ma mkpuchi ahụ bụ diski. Enwere ọdịiche dị na dayameta nke abụọ ahụ, nke Resar ahụ adịchaghị mma, dayameta ya na-abụkarị ihe dị ka 10 ruo 34 mm, ogologo ya na-adịkarị mita 9 ma ọ bụ iri na abụọ. Dayameta nke crow scrac bụ ihe karịrị 10 mm, enwere ike ịhapụ ya.
Nkọwapụta dị iche. The general diameter of the coil screw is 6.5mm, 8.0mm, 10mm, 12mm, and 14mm, while the general diameter of the wire is 5 to 9mm.
Conlails na-ejikarị ihe eji eme ihe.