-Marking for fast identification and aligning. -Click-sound in close position. -Very low profile. -.018 and .022 Slot with ultra-low friction and active with wire height .025. -Approved mechanical locking fishgrate base for easy bonding and debonding. -Additional ligatures and attachments can be used at any time. -Excellent and easy-moving slide mechanics, prevented to be pulled out. Open with tool, close with fingers or tool. **For further product information, please contact Chat Support**