This kit allows the Altistep landing skid to be used on 16mm booms. All parts needed are included : 6 booms clamps, 2 special parts that 

For each Altistep, you will need 2 adapters (one kit) and 6 boom clamps.

• Total weight (kit only): 22 grams

• 6 boom clamps
• 2 special adapters
• screws and nuts

• The Altistep landing skid on the picture is not included.