This is good quality and very affordable price. They work as they should and will not jam or misfire the tool. It is not listed in the description but they are zinc plated steel jaws. I contacted spec ops support through their website and confirmed this prior to ordering. They are well packed in 50 ring sticks. As the name suggests, these are RING616G50 compatible crushers, making them suitable for both the Stanley Bostitch P7 crusher and Spec-Ops' proprietary tool. They "can" work in a Dewalt tool as they are the same width (20mm to the outside edges) and thickness, but the pointed ends are slightly more curved than the Dewalt wrestlers. If I can get hold of any of Dewalt's tools I will update this review with my findings.
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