Thickness: 2.5 mm Internal diameter: 17.5 cm External diameter (with & without spikes): 19.2 - 20 cm Number of teeth: 24 Number of holes: 8 Material: stainless steel Colour: silver Weight: 296 g Compatible with the following device models: McCulloch ROB R1000 McCulloch ROB R800 McCulloch ROB R600 .
