This set of Philip Harris brass hanging slotted masses is ideal for demonstrating forces and investigating mass in science lessons. Designed for use in primary, secondary, and college settings, it supports a range of experiments involving weight and gravity. Each mass is clearly engraved for easy identification and can be quickly added or removed from the sturdy hanger.

• Includes nine 20g brass slotted masses and one 20g hanger (total 200g)

• Each mass has an outer diameter of approximately 23mm and a slot width of 3mm

• Durable polished brass construction

• Easy to handle and store

• Suitable for repeated classroom use