There are some extra parts in the "Panzer-Pioneer-Battalion 37" figures. The cable reel seems self-explanatory *I think*;but I was curious about part #'s 8,9,10,11 & 12. 11 look like detonator boxes or battery packs?

list from side of box kit 6224
PIONEER TOOLS
MG AMMO DRUM CARRIER ( MG 34 ETC)
DEMO WHEEL X 2
DRAHTSCHERE X 1
WIRE ROLL X 1
SAW IN CASE X 1
SAW X 1

GRENADE CASES
GRENADE CASE X 6
STICK GRENADE CASE OPEN
EGG GRENADE CASE OPEN
2 X DETONATORS
LEATHER TAP MEASURE

MINES & EXPLOSIVES
3 KG EXPLOSIVE CHARGE X 6
10 KG EXPLOSIVE CHARGE X 6
TMi35 x2
TMi 35 [STAHL]X2
TMi 42x2
TMi43x2
TOPFMINE 4531 X 1
T MINE KASTEN X 2
SINGLE MINE BOX X 2
AMMUNITION BOX X 4
TMi 29 x 2
SMi 44 x 2
SMi 35 x 2
TOPFMINE X 2
RMi43 x 2
HAFT-HI -3
S-MINE CASE

GERMAN S - MINE (these also shot out of Tiger I's, each corner of chassis)

TMi 43 (ANTI-TANK MINE)

TMi 29

HAFT-HI-3 (Magnetic Copper Cone-shaped charge - ANTI-TANK)

Just google them.

Thanks!