a plurality of inwardly projecting tabs 90 as shown in fig1 and 2 tabs 90 are engaged by resilient clips 92 on the underside of lid 60 when lid 60 is slid over the top of casing 10 from left to right as the drawing figures are oriented other locking mechanism as known in the art are also contemplated as having utility with the invention in use the casing 10 is loaded with suitably sized lead frame strips 12 strips 12 being parallel to the base 14 of casing 10 and in substantially superimposed mutual relationship typically 150 to 200 lead frame strips 12 would be stacked in a casing unless paper or plastic strips are interleaved with the lead frame strips 12 in which case the number of strips 12 would be reduced when the casing 10 is fully loaded lid 70 is placed over casing 10 so that the resilient clips 92 extend into the casing interior and are to the right of their respective tabs the lid 60 is then slid to the left as noted above until tabs 90 are engaged by resilient clips 92 in a 34 snap lock 34 or 34 slide lock 34 connection as lid 60 slides over casing 10 and tabs 90 and clips 92 engage angled steps 62a 62b and 62c respectively engage the distal sides 52.