Bold grade is 12.9 and it has higher tensile strength than stock VE head bolts, giving more clamping force to prevent head lift and gasket leak when cylinder pressures raise from stock.
Recommended to use washers from stock bolts, or use 1.9PD washers.

When combined with Victor Reinc head gasket, offers good durability even with 300+hp engines.

Hydraulic Camshaft Lifter / Follower for Stock engines
 

• Follower for 1.9, 8v and 2.5 10v TDI VE Engines
• Non-coted lifters work well in stock engines, but for performace use, we recommend nitrited model.
• Lifters are OEM quality and should be used always when renewing the camshaft.
• Old lifters combined with new camshaft will wear new camshaft fast because lifters are weared in old camshafts shapes.