This is a bike brake line made of plastic,metal materials. It has a reasonable design and practical functions, flexible and durable, and can well meet your replacement needs. It is made with fine craftsmanship, has good durability, and will not be easily broken or damaged. This is a very good bike brake line, which will serve you well. Features -Color:Black -Material:Plastic,metal -Size(5mm brake tube):250.00X0.50X0.50cm/98.25X0.20X0.20in -Size(4mm velocity variation tube):200.00X0.40X0.40cm/78.60X0.16X0.16in -Size(front brake inner line):110.00X0.15X0.15cm/43.23X0.06X0.06in -Size(rear brake inner line):170.00X0.15X0.15cm/66.81X0.06X0.06in - Effectively protect the brake line, reduce brake line resistance, they are suitable for bicycles brake repairing. - This bicycle's brake cables kit is made of good material. Each replacement part has been well made, reliable and durable, and can be applied for a long time. - This bicycle's brake cable housing kit is suitable for both mountain bikes and road bikes. - Strong cable for more braking power and smooth operation, long length and heads to fit mountain bike, road bike. - They can help you hold the brake well, reduce friction brake line. It can help you . Package list: 4 x brake sleeve covers 10 x velocity variation sleeve covers 4 tip covers 1 shape hoop 2 x line cables 2 x brake inner cables