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Grey Pneumatic 7 inch tapered punch on metal clip rail

Grey Pneumatic

Grey Pneumatic GYCH811 7 in. Long Tapered Punch pneumatic accessory

SKU CH-Z236-VC7QQ

A 7-inch tapered punch for pneumatic tools, built from chrome-molybdenum alloy steel for high-torque impact work

  • TypeDrill Bits
  • 7 in. length reaches deep fasteners
  • Tapered punch design aligns and starts holes cleanly
  • Chrome-molybdenum alloy steel resists wear under impact
  • Heat-treated for strength and durability balance
  • New condition ensures full factory performance

Grey Pneumatic GYCH811 Long Tapered Punch

The Grey Pneumatic GYCH811 is a 7 in. long tapered punch designed for use with pneumatic impact tools. It suits professional technicians and automotive mechanics who need to drive pins or align components in tight spaces. The accessory is made from chrome-molybdenum alloy steel with exact heat treatment for strength and durability. It is supplied new and ready for workshop use.

Practical limits of pneumatic impact accessories

The punch transfers force from the tool directly into the workpiece, so the operator must match the tool output to the task to avoid damaging the punch tip or the fastener. Chrome-molybdenum steel resists wear but can fracture under extreme shock loads beyond the material yield point. The tapered profile concentrates stress at the narrow end, which limits the maximum safe impact energy compared to a straight drift. Users should verify tool settings before each job.

Installation and common issues

The punch fits into a standard impact tool holder and requires no special adapters for basic operation. Simply insert the shank, secure the retainer, and apply controlled blows to the workpiece. Problems usually arise when the tip mushrooms from off-centre strikes or when the punch binds in a corroded hole, leading to tip breakage. Regular inspection for deformation and keeping the tip clean prevents most failures.

Highlights

  • 7 in. length reaches deep fasteners
  • Tapered punch design aligns and starts holes cleanly
  • Chrome-molybdenum alloy steel resists wear under impact
  • Heat-treated for strength and durability balance
  • New condition ensures full factory performance

Specifications

TypeDrill Bits

Questions about this item

Which Grey Pneumatic GYCH811 punch length should I pick for deep-reach work?

The 7-inch tapered punch is the single length offered, giving the reach needed for deep or obstructed fasteners.

What does the 20% torque increase mean when I use this punch with an impact tool?

The High Torque drive design transfers pressure to thicker socket walls, letting you apply up to 20% more torque without rounding fasteners.

How does the 3/8-inch drive interface limit what I can do with this punch?

The 3/8-inch drive fits standard impact drivers and caps the maximum fastener size to the 7-piece fractional hex set included on the metal clip rail.

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