Polychem Solutions Ultra CR Concentrate Jewellery Cleaner 4003B Series Ronda #312 Suspension Spring relative to

#312 Suspension Spring relative to the image

60 mm x 12

Letdown Key is a specially designed key for disarming and arming (winding) clock mainsprings

2 mm in diameter and has 89 teeth

This rack will not rust or contaminate the solution

Polychem Solutions Ultra CR Concentrate Jewellery Cleaner 4003B Series Ronda #312 Suspension Spring relative toPolychem Solutions Ultra CR Concentrate Jewellery Cleaner A biodegradable, non ammoniated, non hazardous solution. This concentrate jewellery cleaner is mixed 1 part solution to 1 parts water. Efficiently cleans with a minimum of time in the ultrasonic machine. Rinses clean without a cling chemical odor. Supplied in 1 gallon jugs.