The brake hoses are entirely Made in Italy, built with PTFE aeronautical braided tube coated with stainless steel braid with transparent anti-abrasion polyurethane protection specific for off-road vehicles and not in pvc as on braided car pipes.The couplings are made of steel and are assembled in accordance with SAE J 1401.The +10cm, are ideal for assemblies +6 to +10cm.We at HM4X4 are the manufacturers so you can request the tubes also with different sizes from those proposed, the custom made pipes are made and shipped immediately.