Tension Spring. Element of the chain brake device. Models: MS 192 C-E MS 192 C-E Z MS 192 T MS 192 TC-E MS 192 TC-E Z MS 192 T-Z MS 193 C-E MS 193 T MS 193 TC-E MS 193 T-Z MS 194 C-E MS 194 T MS 194 TC-E MS 194 T-Z