Gramercy Hold fasts
These holdfasts are made by Gramercy in the USA. They are made using a modern formed wire process. A bit like spring steel and I would say virtually unbreakable under normal conditions.
The holdfast is used in a 3/4" hole in your workbench top. A 1 3/4" thick or thicker top is required for them to function properly. If your top is thinner you simply add a packer under the bench where the hold is to go. They have a 6 1/2" reach and the maximum clamping hieght is 7 1/4" in a 2" thick benchtop.
Imported into Australia by Colen Clenton.
This knock-down clamp is excellent, it's beautifully made to a high standard. Typical high end USA manufacturing. The surface on the contact pad of the clamp is smooth and flat and unlikely to leave a mark in timbers. Well worth the cost
When received they were all new beaut & shiny but would not hold. After roughing up shafts with a linisher they were fine, may be consideration for the manufacturer
Works as expected.
I initially ordered a cheaper hold fast from a different supplier to save money. The cheaper hold fast was too small/stiff to work properly and had threading on the vertical part. The threading tore up my dog holes and due to stiffness and size, locked in terribly. This Gramercy hold fast works perfect. As others have posted, i have added some leather to the hold fast to add grip and protect my work. Highly recommend
They work excellently in my sawyers bench with relatively narrow thickness. They hold so fast that a caul is necessary.