What needles are used in tubes labeled DST-7M-1? 11th March 202230th March 2022 Questions › What needles are used in tubes labeled DST-7M-1? x Thanks For Submitting Your Message! Check back here to see your message once we've reviewed it. 0 Vote Up Vote Down What needles are used in tubes labeled DST-7M-1? Submitted by: Scottie miser3 years ago 1 Answers 0 Vote Up Vote Down Barber DTS answered 3 years ago Reading Time: < 1 minutesHi Scottie, 7M1 refers to a 7 (straight) magnum. 7 is the number of needles used, M is for Magnum and 1 denotes a straight magnum. Was this helpful? Give it a share! Please login or Register to submit your answer Username or Email Address Password Remember Me