This item is a reversing drum mixer. A reversing drum mixer (also commonly called a non-tilting mixer) is a type of concrete mixer that produces concrete in single batches. The entire drum rotates around its axis as materials are loaded through a charge chute at one end of the drum and exit through a discharge chute at the opposite end of the drum.
Mixing blades are mounted on the inside surface of the drum and as the drum rotates the blades mix by lifting and dropping the materials during each rotation. Once the materials are sufficiently mixed the rotation of the drum is reversed and the blade arrangement pushes the concrete through to the discharge end of the mixer.
Its advantages are convenient operation, good mixing quality and high productivity ect. And it is the ideal machines for construction fields, road, bridge project and all kinds of concrete parts factory. This reversing drum mixers are known for the extremely low maintenance and operating costs, yet a good mixing effect relative to other drum mixers.

Heavy duty, reversing drum, mechanically fed concrete mixer manufactured to the highest specification
Strong feed hopper pulled by steel dragline
Towable chassis with two pneumatic tyred wheels
Jacking system allows wheel removal for storage during long term use
Durable water pump
Long life gear wheel and big extra thick stee drum
Patented and high performance diesel engine

40CrMo made knurl studs for wheel are widely used on wheel hub and Wheel Adapter.at least class 10.9.

top quality steel from steel for all lug bolts, and wheel locks. All lug bolts and wheel locks are COLD FORGED and are tempered to strength class 10.9.

XS wheel bolts are made from 40Cr or 40CrMo by cold extrusion machine and chrome layer gives the brilliant appearance with grade 10.9 strength, there are conical seat, radius seat, and Allen key style.

Wheel Bolts & Stud

Wheel Bolt, Wheel Stud, Standoff Bolt, Screw Stud, Knurled Stud

Ningbo Xiangsheng Auto Parts Co., Ltd. , http://www.partsaa.com