Spang Solid Jar Bumper-Knocker-Bumping Bar 59" X 6" OD

Spang Solid Type Jar Bumper / Knocker /Bumping Bar
Run on sand line over drilling cable to bump or knock tools loose that become wedged.
Overall length 59", estimated 6" Maximum OD (both ends taper down to 3-1/4" OD).
Groove for cable approximately 1" wide.
Located in Mifflinburg, PA USA