This is a Snowbird Nose Ski (826) by Dubro.

Features

Torsion Bar Design
Easily mounts on airplanes with Dural or Wire Landing
Gear in about an hour.
High density Black Polyethelene
Pre-Molded Runners
Ideal for .60 Size Airplanes

Includes

One Ski
One Torsion Wire
One Torsion Wire Mounting Block
One Piece of Heat Shrink
Two 4-40x3/8" bolt
Two #4 lock washers

Requires

Mounting Hardware and tools

Specifications

Length: 228.6 mm (9")
Width: 63.5 mm (2.5")
Wire Diameter: 3.2 mm (0.125")