This set of Philip Harris stainless steel hanging slotted masses is ideal for hands-on science lessons, helping students explore forces and weights in a practical way. Designed for use in primary, secondary and college classrooms, it supports a wide range of experiments involving mass and gravity.

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

• Made from durable stainless steel with a polished finish

• Each mass is clearly engraved for easy identification

• Outer diameter: 19mm; slot width: 4.8mm; thickness: 8mm (approx.)

• Slots allow quick and simple adjustment of total mass