Quality Great Wall Red - Standard segment with medium feed and good service life suitable for concrete with reinforcement! We recommend this segment with up to 12 mm reinforcement. Please take into account that increased wear occurs with heavy reinforcement!!!! Quality roof segments Speed Blue - professional segment with very fast feed and longer service life suitable for concrete with strong reinforcement! 25 mm and more no problem! Please take into account that increased wear occurs with heavy reinforcement!!!! Quality block segment (only 8 mm segment height) Purple - professional segment with medium feed and extremely long service life suitable for concrete with strong reinforcement! 25 mm and more no problem! Please take into account that increased wear occurs with heavy reinforcemen.