Explanation helper for Platinum SLS Boom Tailend variants:7a) => DTW - Platinum SLS Boom Tailend Mega Slim 140/150 (19mm)7b) => DTW - Platinum SLS Boom Tailend 140/150 (23,5mm)7c) => DTW - Platinum SLS Boom Tailend 160-220 (23,5mm)7d) => DTW - Platinum SLS Boom Tailend 170-230 (23,5mm)7e) =>DTW - Platinum SLS Boom Tailend 190-250 (32/28mm)