Designed for administering Yttrium-90, Strontium-89, Phosphorous-32 and other beta emitting radiopharmaceuticals. The lightweight shield is manufactured in acrylic with a thin layer of lead encapsulated in the acrylic. This construction attenuates both beta emissions and Bremstrahlung. The barrel is bevelled for manoeuvrability. Size is 80mm long by 38mm o.d. and 19mm i.d. Weight is 118g. Screw locking mechanism.