Grex Power Tools says its GCH850 is the first and only cordless 21 gauge brad nailer in the market. It has the ability to drive nails up to 2-in. in length, with a holding power close to that of an 18-gauge brad nail, and a hole size closer to that of a 23-gauge pin. This results in time and cost savings by being able to go onto a jobsite with only one nailer instead of two different tools, Grex adds. The GCH850 cordless brad nailer touts the same size, weight and ergonomics as the GCP650 2-in. 23-gauge cordless pinner introduced in 2019.