CAMP Steel Linking Bars

CampSaver.com says:
C.A.M.P. Stalker Flexible Linking Bar. 5 cm flexible steel linking bars. See specifications for compatibility. Sold in pairs. Specifications for C.A.M.P. Stalker Flexible Linking Bars: Manufacturer: C.A.M.P. Fabric/Material: Steel Quantity: Pair Features of C.A.M.P. Stalker Flexible Linking Bars: 17.5 cm 16 holes Stalker / Magix 10 / Magix 8 Package Contents: C.A.M.P. Stalker Flexible Linking Bars C.A.M.P. 2912: Stalker Flexible Linking Bar