100% natural and biodegradable with rubberwood head and stiff bassine bristles. For indoor and outdoor use wherever a hard-wearing brush is required. Compatible with 28mm (1-1/8″) dia broom handles. 75mm bristles. 100% natural and biodegradable with rubberwood head and stiff bassine bristles. For indoor and outdoor use wherever a hard-wearing brush is required. Compatible with 28mm (1-1/8″) dia broom handles. 75mm bristles.