100% natural and biodegradable with rubberwood head and soft coco bristles. For indoor and outdoor use. Compatible with 28mm (1-1/8″) dia broom handles. 75mm bristles. 100% natural and biodegradable with rubberwood head and soft coco bristles. For indoor and outdoor use. Compatible with 28mm (1-1/8″) dia broom handles. 75mm bristles.