This glue bottle set comes with two heads for specialty applications.
The biscuit-shaped applicator fits the slot produced by a biscuit joiner to spread glue evenly inside; glue flows through a slot in the center and along the profiled edge. An applicator cap for it is included.
The 2 1/2" wide rubber roller is useful for large surface applications; glue squeezed onto the roller is spread on the wood in an even layer.
Can be used with PVA adhesives or liquid hide glues (regular wood glues). Bottle holds 8 oz.